Aggregator

* WHAT...Hot conditions with temperatures up to 103 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...Lower Columbia Basin of Oregon and Washington. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures up to 97 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...Simcoe Highlands. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures up to 100 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...Kittitas Valley and Yakima Valley. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures up to 100 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...In Oregon, Foothills of the Northern Blue Mountains of Oregon. In Washington, Foothills of the Blue Mountains of Washington. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures up to 100 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...Eastern Columbia River Gorge of Oregon and Washington. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses. Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures up to 103 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...Lower Columbia Basin of Oregon and Washington. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures up to 97 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...Foothills of the Southern Blue Mountains of Oregon and North Central Oregon. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures up to 100 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...In Oregon, Foothills of the Northern Blue Mountains of Oregon. In Washington, Foothills of the Blue Mountains of Washington. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures up to 100 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...Eastern Columbia River Gorge of Oregon and Washington. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses. Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

* WHAT...Temperatures up to 104 expected in the Lower Snake Plain, Treasure Valley, and Weiser Basin. * WHERE...Portions of southwest Idaho and southeast Oregon. * WHEN...From 11 AM MDT /10 AM PDT/ to 8 PM MDT /7 PM PDT/ Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses, especially for the young, elderly, and animals.

...DRY THUNDERSTORMS EXPECTED FOR CENTRAL OREGON TUESDAY, FOLLOWED BY DRY AND WINDY CONDITIONS ACROSS THE KITTITAS VALLEY AND WASHINGTON BASIN WEDNESDAY... .The high pressure currently leading to hot and dry conditions will start to break down Tuesday into Wednesday, allowing for dry thunderstorms to develop across central Oregon. Once high pressure has completely broken down on Wednesday, winds will pick up. With RHs having little time to recover from Monday and Tuesday's heat, this will lead to potentially critical fire weather conditions across the Kittitas Valley and into the Washington Columbia Basin. The National Weather Service in Pendleton has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Wednesday afternoon through Wednesday evening. * AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley and 691 Lower Columbia Basin of Washington. * TIMING...From Wednesday afternoon through Wednesday evening. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended. * WINDS...For the Kittitas Valley, northwest winds 20 to 30 mph with gusts up to 40 mph. For the Lower Columbia Basin of Washington, west-northwest winds 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 15 percent.

...DRY THUNDERSTORMS EXPECTED FOR CENTRAL OREGON TUESDAY, FOLLOWED BY DRY AND WINDY CONDITIONS ACROSS THE KITTITAS VALLEY AND WASHINGTON BASIN WEDNESDAY... .The high pressure currently leading to hot and dry conditions will start to break down Tuesday into Wednesday, allowing for dry thunderstorms to develop across central Oregon. Once high pressure has completely broken down on Wednesday, winds will pick up. With RHs having little time to recover from Monday and Tuesday's heat, this will lead to potentially critical fire weather conditions across the Kittitas Valley and into the Washington Columbia Basin. The National Weather Service in Pendleton has issued a Red Flag Warning for abundant lightning, which is in effect from 2 PM to 9 PM PDT Tuesday. * AFFECTED AREA...Fire Weather Zone 700 Central Mountains of Oregon. * TIMING...From 2 PM to 9 PM PDT Tuesday. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended. * RAINFALL AMOUNTS...Storms are mostly expected to be dry, with rainfall amounts less than a tenth of an inch. A few isolated storm cells could produce rainfall amounts of 0.1 to 0.2 inches. * OUTFLOW WINDS...As high as 45 mph.

* WHAT...High temperatures between 93 and 104 degrees. Overnight lows in the upper 50s to mid 60s. * WHERE...Portions of North and North Central Idaho and Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...From 9 AM this morning to 9 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

* WHAT...Temperatures up to 103 expected in the Lower Snake Plain, Treasure Valley, and Weiser Basin. * WHERE...Portions of southwest Idaho and southeast Oregon. * WHEN...From 11 AM MDT /10 AM PDT/ to 8 PM MDT /7 PM PDT/ Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses, especially for the young, elderly, and animals.

* WHAT...Temperatures up to 103 expected. * WHERE...Treasure Valley and Weiser River Basin. * WHEN...From 11 AM MDT /10 AM PDT/ to 8 PM MDT /7 PM PDT/ Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses, especially for the young, elderly, and animals.

* WHAT...Afternoon high temperatures of 94-102 degrees and overnight low temperatures of 65-73 degrees expected. This will pose a moderate to major risk of heat-related illness. * WHERE...Eastern Columbia River Gorge of Oregon and Washington. * WHEN...From 9 AM Monday to 9 PM PDT Tuesday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

* WHAT...Afternoon high temperatures of 94-102 degrees and overnight low temperatures of 60-68 degrees expected. This will pose a moderate to major risk of heat-related illness. * WHERE...Kittitas Valley and Yakima Valley. * WHEN...From 9 AM Monday to 9 PM PDT Tuesday. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Afternoon high temperatures of 94-102 degrees and overnight low temperatures of 62-70 degrees expected. This will pose a moderate to major risk of heat-related illness. * WHERE...In Oregon, Foothills of the Northern Blue Mountains of Oregon. In Washington, Foothills of the Blue Mountains of Washington. * WHEN...From 9 AM Monday to 9 PM PDT Tuesday. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Afternoon high temperatures of 95-103 degrees and overnight low temperatures of 63-71 degrees expected. This will pose a moderate to major risk of heat-related illness. * WHERE...Lower Columbia Basin of Oregon and Washington. * WHEN...From 9 AM Monday to 9 PM PDT Tuesday. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Afternoon high temperatures of 91-99 degrees and overnight low temperatures of 62-70 degrees expected. This will pose a moderate to major risk of heat-related illness. * WHERE...Simcoe Highlands. * WHEN...From 9 AM Monday to 9 PM PDT Tuesday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.